JACKSON TWP — Police are investigating a fatal accident this morning on the on-ramp to Interstate 79 northbound from Route 19. The female driver of the vehicle died, but police are still investigating the cause of death, Police Chief Terry Seilhamer said. The vehicle went over a guardrail and fell into a gully. Police do not know how long the vehicle had been there when they were called to the scene at 7:52 a.m., Seilhamer said.